Adding 15% cement to clayey soil reduces total deformation by 25% and consolidation settlement by 28% after 7 days.
Researchers studied the effect of adding different percentages of cement to clayey soil on its bearing capacity and settlement. They created a model of sandy-clay soil mixed with 5%, 10%, and 15% cement and performed static analysis using a Finite Element program. The results showed that adding 15% cement reduced total deformation and consolidation settlement compared to untreated soil, with the greatest improvements seen after 7 days.
Abstract
Excessive settlement of clayey soils and low-bearing capacity leading to damage and collapse of the structure induce problems in infrastructure construction. Various ground improvement methods are used to solve this problem. The purpose of these methods, in which the cement mixture is included, is to increase the soil bearing capacity and to reduce the soil settlement.
In this study, total plastic and consolidation settlement analysis of sandy-clay soil model mixed with cement by different percentages (5%, 10%, 15%) are made. The physical and mechanical properties of the improved clay-cement soil are obtained based on the results available in the literature and in the laboratories of Istanbul Aydın University. A Finite Element program was used to perform static analysis. Static analysis of the soil was carried out under different loads (50, 100, 150, 200 kPa). The results showed that fort he plastic analysis, the 15% cement treated soil had 25% total deformation less than the untreated soil. Considering the same soil profile, for consolidation analysis, the decrease was observed to be 28% at the end of 7 days.
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